Progress in fullerene-based hybrid perovskite solar cells

In this review, we summarize recent advances that have resulted in fullerene-based high-efficiency perovskite solar cells (PSCs) by new processing methods of the perovskite films, by adding fullerenes as interfacial selective electron extraction layers and improving device stability or by incorporating fullerene derivatives to eliminate hysteretic behavior of both regular and inverted PSC structures. Finally, we outline some perspectives for further advancing PSCs for large-scale and commercial applications.